import datetime


def get_ymd_str():
    return datetime.datetime.now().strftime("%Y%m%d")


def get_y_str():
    return datetime.datetime.now().strftime("%Y")


def get_md_str():
    return datetime.datetime.now().strftime("%m%d")


def get_ymdhms_str():
    return datetime.datetime.now().strftime("%Y%m%d%H%M%S")


def get_ymdhms_format1_str():
    return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")


def get_ymdhms_format2_str():
    return datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")


if __name__ == '__main__':
    print(get_ymdhms_format1_str())
